What can I do if Acer chromebook 514 battery is not charging?

We recommend trying the following troubleshooting if you are having problems with your device charging the battery. If the troubleshooting below does not allow your battery to charge, you may need battery replacement or repair service.

    Make sure you are using the AC adapter and power cord that came with your product.
    Make sure you are using a working wall outlet to charge your device. USB ports do not provide sufficient power for charging many devices.
    If you are using a surge protector, temporarily bypass it to see if it is prohibiting your system from charging.
    Attempt a battery reset if your device has a battery reset button.
    If your battery is removable, remove it for the system for 10 seconds, then reinstall the battery.
The above sources from community.acer.com

acer chromebook 514 cb514-1h battery

Brand new acer chromebook 514 cb514-1h 11.4V 3920mAh laptop batteries
    

    Price: 110 NZD
    Voltage: 11.4V
    Capacity: 3920mAh (44.6Wh)
    Battery cells: 3-cell
    Chemical: Li-ion
    Battery Color: black
    Condition: new original battery
    Warranty: 9 months
    Fress shipping: Yes
    Shipping time: 7-15 days.

You can also have more details here: https://www.storebattery.co.nz/acer-chromebook-514-cb514-1h-11.4v-3920mah-laptop-battery-store-for-new-zealand-p-390059.html

What can you do to make lenovo ideapad c340 15 battery last longer?

There are several things that will help the battery last longer:

    Use the product's power saving controls to reduce battery use in a normal day. For example, turn Bluetooth off if not needed and reduce the screen brightness if possible.
    Avoid exposure to extreme temperatures. If the system is exposed to extreme cold or hot temperatures, allow the system to warm up or cool down before use and before charging.
    All batteries wear with use and time. When the runtime is no longer sufficient for your needs, consider purchasing a new Lenovo battery from shop.lenovo.com.
    The Lenovo Vantage application provides several advanced battery management features. See the Power settings section under My Device Settings.
    Additionally, Microsoft Windows Battery Saver Settings provides multiple ways to optimize your battery performance, including Battery Saver mode and lists of applications draining battery life.

The above sources from pcsupport.lenovo.com.

Brand new lenovo ideapad c340 15 11.4V 4610mAh laptop batteries
    Price: 132 NZD
    Voltage: 11.4V
    Capacity: 4610mAh (52.5Wh)
    Battery cells: 3-cell
    Chemical: Li-ion
    Battery Color: black
    Condition: new original battery
    Warranty: 9 months
    Shipping time: 7-15 days
    Free shipping: Yes

You can have more detail here: https://www.storebattery.co.nz/lenovo-ideapad-c340-15-11.4v-4610mah-laptop-battery-store-for-new-zealand-p-334873.html